화학공학소재연구정보센터
Materials Science Forum, Vol.449-4, 43-48, 2004
Aerosol deposition method for fabrication of nano crystal ceramic layer - Novel ceramics coating with collision of fine powder at room temperature
Aerosol deposition method (ADM) for shock-consolidation of fine ceramics powder to form dense and hard layers is reported. Submicron ceramic particles were accelerated by gas flow in the nozzle up to velocity of several hundred m/s. During interaction with substrate, these particles formed thick (10 similar to 100 mum), dense, uniform and hard ceramics layers. Depositions were fulfilled at room temperature. Every layer has polycrystalline structure with nano-meter order scale. The results of fabrications, microstructure, mechanical and electrical properties of oxides (alpha-Al2O3; Pb(Zr-0.52,Ti-0.48)O-3 etc.) and non-oxides materials are presented.